code: def get_paths(scheme=get_default_scheme(), vars=None, expand=True):
      """Return a mapping containing an install scheme.
  
      ``scheme`` is the install scheme name. If not provided, it will
      return the default scheme for the current platform.
      """
      if expand:
          return _expand_vars(scheme, vars)
      else:
          return _INSTALL_SCHEMES[scheme]
  
imports: import os
  import sys
  import threading
  from os.path import realpath
label_desc: Use image node_id 19 for calling a global function with example usage: get_paths(scheme, vars, expand) and returns: _expand_vars, _INSTALL_SCHEMES